| All patients | Propensity score-matched groups | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Groups A and B | Group C | P-value | Groups A and B | Group C | P-value | |||||
| (n = 118) | (n = 1225) | (n = 114) | (n = 114) | |||||||
| Age [mean (SD)] | 74.8 | (9.8) | 75.0 | (14.4) | 0.85 | 75.0 | (9.7) | 74.4 | (15.0) | 0.70 |
| Female (%) | 55 | (46.6) | 581 | (47.4) | 0.92 | 54 | (47.4) | 48 | (42.1) | 0.51 |
| Dialysis (%) | 4 | (3.4) | 36 | (2.9) | 0.77 | 4 | (3.5) | 3 | (2.6) | 1.0 |
| Billroth-1 reconstruction (%) | 6 | (5.1) | 30 | (2.4) | 0.12 | 6 | (5.3) | 6 | (5.3) | 1.0 |
| Non-expert endoscopists (%) | 24 | (20.3) | 184 | (15.0) | 0.14 | 22 | (19.3) | 15 | (13.2) | 0.28 |
| Successful biliary cannulation (%) | 115 | (97.5) | 1212 | (98.9) | 0.16 | 111 | (97.4) | 112 | (98.2) | 1.0 |
| Periampullary diverticulum (%) | 38 | (32.2) | 367 | (30.0) | 0.60 | 37 | (32.5) | 30 | (26.3) | 0.38 |
| Normal serum bilirubin (%) | 112 | (94.9) | 461 | (37.6) | <0.001 | 108 | (94.7) | 109 | (95.6) | 1.0 |
| Non-dilated CBD (<10 mm) (%) | 41 | (34.7) | 494 | (40.3) | 0.28 | 40 | (35.1) | 39 | (34.2) | 1.0 |
| Contrast-assisted cannulation (%) | 87 | (73.7) | 876 | (71.5) | 0.67 | 84 | (73.7) | 82 | (71.9) | 0.88 |
| Wire-guided cannulation (%) | 8 | (6.8) | 126 | (10.3) | 0.26 | 8 | (7.0) | 7 | (6.1) | 1.0 |
| PGW-assisted cannulation (%) | 11 | (9.3) | 166 | (13.6) | 0.25 | 10 | (8.8) | 11 | (9.6) | 1.0 |
| Difficult biliary cannulation >10min (%) | 43 | (36.4) | 289 | (23.6) | 0.003 | 40 | (35.1) | 39 | (34.2) | 1.0 |
| Pancreatic injection (%) | 60 | (50.8) | 533 | (43.5) | 0.15 | 57 | (50.0) | 58 | (50.9) | 1.0 |
| Precut sphincterotomy (%) | 12 | (10.2) | 56 | (4.6) | 0.014 | 12 | (10.5) | 14 | (12.3) | 0.84 |
| Use of balloon catheter (%) | 94 | (79.7) | 979 | (79.9) | 0.91 | 92 | (80.7) | 90 | (78.9) | 0.87 |
| Use of basket catheter (%) | 65 | (55.1) | 553 | (45.1) | 0.042 | 62 | (54.4) | 61 | (53.5) | 1.0 |
| Mechanical lithotripsy (%) | 17 | (14.4) | 197 | (16.1) | 0.70 | 16 | (14.0) | 16 | (14.0) | 1.0 |
| Biliary stent placement (%) | 83 | (70.3) | 1072 | (87.5) | <0.001 | 82 | (71.9) | 85 | (74.6) | 0.77 |
| EST (%) | 86 | (72.9) | 893 | (72.9) | 1.0 | 82 | (71.9) | 80 | (70.2) | 0.88 |
| EPBD (%) | 7 | (5.9) | 132 | (10.8) | 0.11 | 7 | (6.1) | 8 | (7.0) | 1.0 |
| EPLBD (%) | 22 | (18.6) | 187 | (15.3) | 0.35 | 22 | (19.3) | 24 | (21.1) | 0.87 |
| Prophylactic pancreatic stent placement (%) | 16 | (13.6) | 166 | (13.6) | 1.0 | 16 | (14.0) | 15 | (13.2) | 1.0 |
| Rectal NSAIDs (%) | 10 | (8.5) | 108 | (8.8) | 1.0 | 9 | (7.9) | 8 | (7.0) | 1.0 |
| Post-cholecystectomy (%) | 27 | (22.9) | 129 | (10.5) | <0.001 | 25 | (21.9) | 30 | (26.3) | 0.54 |
| Presence of gallstones (%) | 60 | (50.8) | 759 | (62.0) | 0.023 | 58 | (50.9) | 56 | (49.1) | 0.90 |
| Large stones (>10 mm) (%) | 14 | (11.9) | 234 | (19.1) | 0.062 | 14 | (12.3) | 15 | (13.2) | 1.0 |
| Number of CBDS [mean (SD)] | 2.7 | (3.9) | 2.2 | (2.5) | 0.15 | 2.8 | (4.0) | 2.5 | (3.0) | 0.54 |
| Procedure time, min [mean (SD)] | 31.5 | (18.8) | 26.1 | (14.9) | 0.003 | 31.5 | (19.0) | 31.2 | (10.8) | 0.91 |
| All patients | Propensity score-matched groups | |||||
|---|---|---|---|---|---|---|
| Groups A and B | Group C | P-value | Groups A and B | Group C | P-value | |
| (n = 118) | (n = 1225) | (n = 114) | (n = 114) | |||
| PEP (%) | 15 (12.7) | 35 (2.9) | <0.001 | 15 (13.2) | 5 (4.4) | 0.033 |
| Group A | Group B | P-value | |
|---|---|---|---|
| (n = 77) | (n = 41) | ||
| Age [mean (SD)] | 74.3 (9.1) | 75.8 (11.0) | 0.47 |
| Female (%) | 33 (42.9) | 22 (53.7) | 0.33 |
| Dialysis (%) | 3 (3.9) | 1 (2.4) | 1.0 |
| Billroth-1 reconstruction (%) | 3 (3.9) | 3 (7.3) | 0.42 |
| Non-expert endoscopists (%) | 17 (22.1) | 7 (17.1) | 0.63 |
| Successful biliary cannulation (%) | 74 (96.1) | 41 (100.0) | 0.55 |
| Periampullary diverticulum (%) | 25 (32.5) | 13 (31.7) | 1.0 |
| Normal serum bilirubin (%) | 74 (96.1) | 38 (92.7) | 0.42 |
| Non-dilated CBD (<10 mm) (%) | 28 (36.4) | 13 (31.7) | 0.69 |
| Contrast-assisted cannulation (%) | 56 (72.7) | 31 (75.6) | 0.83 |
| Wire-guided cannulation (%) | 7 (9.1) | 1 (2.4) | 0.26 |
| PGW-assisted cannulation (%) | 7 (9.1) | 4 (9.8) | 1.0 |
| Difficult biliary cannulation >10min (%) | 29 (37.7) | 14 (34.1) | 0.84 |
| Pancreatic injection (%) | 42 (54.5) | 18 (43.9) | 0.34 |
| Precut sphincterotomy (%) | 7 (9.1) | 5 (12.2) | 0.75 |
| Use of balloon catheter (%) | 60 (77.9) | 34 (82.9) | 0.63 |
| Use of basket catheter (%) | 43 (55.8) | 22 (53.7) | 0.85 |
| Mechanical lithotripsy (%) | 9 (11.7) | 8 (19.5) | 0.28 |
| Biliary stent placement (%) | 56 (72.7) | 27 (65.9) | 0.53 |
| EST (%) | 59 (76.6) | 27 (65.9) | 0.28 |
| EPBD (%) | 2 (2.6) | 5 (12.2) | 0.049 |
| EPLBD (%) | 13 (16.9) | 9 (22.0) | 0.62 |
| Prophylactic pancreatic stent placement (%) | 12 (15.6) | 4 (9.8) | 0.57 |
| Rectal NSAIDs (%) | 7 (9.1) | 3 (7.3) | 1.0 |
| Post-cholecystectomy (%) | 16 (20.8) | 11 (26.8) | 0.50 |
| Presence of gallstones (%) | 41 (53.2) | 19 (46.3) | 0.56 |
| Large stones (> 10 mm) (%) | 10 (13.0) | 4 (9.8) | 0.77 |
| Number of CBDS [mean (SD)] | 2.4 (3.0) | 3.3 (5.2) | 0.33 |
| Procedure time, min [mean (SD)] | 32.3 (18.8) | 30.0 (19.0) | 0.53 |
| Group A | Group B | P-value | |
|---|---|---|---|
| (n = 77) | (n = 41) | ||
| Post-ERCP pancreatitis (%) | 9 (11.7%) | 6 (14.6%) | 0.77 |
| Severity | 1.0 | ||
| Mild (%) | 5 (55.6%) | 3 (50.0%) | |
| Moderate (%) | 3 (33.3%) | 3 (50.0%) | |
| Severe (%) | 1 (11.1%) | 0 (0%) |
